public object Find(Type entityType, object primaryKeValue)
{
if (primaryKeValue == null)
{
return(null);
}
if (AttrHelper.IsSimple(primaryKeValue.GetType()) == false)
{
if (primaryKeValue.GetType() != entityType)
{
throw new InvalidDataException("Find by pk whitch is not simple and not same type");
}
primaryKeValue = ModelHelper.GetPKValue(primaryKeValue);
if (primaryKeValue == null)
{
throw new InvalidDataException("Find by pk whitch is not simple and not have pk");
}
}
object o = null;
PropertyInfo pPK = AttrHelper.GetProperty <JPrimaryKey>(entityType);
SData sdata = GetSData(entityType);
sdata.PkCache.TryGetValue(primaryKeValue, out o);
return(o);
}
private void SaveEntityData(SData s)
{
object list = s.DataList;
SaveEntityDataLocal((IList)list, s.DataType, null);
s.Modified = false;
}
private SData LoadEntityFromDisk(Type t)
{
JEntity entityAttr = AttrHelper.GetClassAttribute <JEntity>(t);
if (entityAttr.DsType != typeof(JsonDs))
{
throw new InvalidOperationException("Not a json file stored entity");
}
//long tstart = DateTime.Now.Ticks;
SData sdata = new SData()
{
DataType = t
};
Type lt = typeof(List <>);
Type listType = lt.MakeGenericType(t);
object list = null;
string filename = GetDataFilePathForType(t);
FileInfo fileInfo = new FileInfo(filename);
if (fileInfo.Exists)
{
list = JsonSerializeHelper.LoadForType(filename, listType);
}
else
{
list = Activator.CreateInstance(listType);
}
foreach (var x in (IList)list)
{
INotifyPropertyChanged notifier = x as INotifyPropertyChanged;
if (notifier != null)
{
notifier.PropertyChanged += Notifier_PropertyChanged;
}
}
PropertyInfo pkProp = AttrHelper.GetProperty <JPrimaryKey>(t);
if (pkProp != null)
{
foreach (var o in (IList)list)
{
object pk = pkProp.GetValue(o);
try
{
sdata.PkCache.Add(pk, o);
}
catch (ArgumentException ex)
{
Log.ProcessDebug("Dublicate pk entity: " + t + " pk value: " + pk + " Error text: " + ex);
}
}
}
sdata.DataList = list;
sdatas.Add(sdata);
return(sdata);
}
public void SaveEntityData(Type type)
{
SData s = GetSData(type);
if (s != null)
{
SaveEntityData(s);
}
}
private void Notifier_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
SData sdata = GetSData(sender.GetType());
if (sdata != null)
{
sdata.Modified = true;
}
}
public void SetEntityModified(Type t)
{
SData sdata = GetSData(t);
if (sdata != null)
{
sdata.Modified = true;
}
}
public bool IsEntityModified(Type t)
{
SData sdata = GetSData(t);
if (sdata != null)
{
return(sdata.Modified);
}
else
{
return(false);
}
}
private SData GetSData(Type t)
{
SData sdata = null;
foreach (var s in sdatas)
{
if (s.DataType.Equals(t))
{
sdata = s;
break;
}
}
return(sdata);
}
public void GenNextPkValue(object o)
{
Type t = o.GetType();
PropertyInfo pPK = AttrHelper.GetProperty <JPrimaryKey>(t);
if (pPK != null)
{
if (AttrHelper.IsAttributePresent <JAutoIncrement>(t, pPK.Name))
{
//string maxValue = DataUtils.genKey(null);
IList list = FindAll(t);
SData sdata = GetSData(t);
int maxValue = 0;
if (sdata.MaxId == null)
{
foreach (var l in list)
{
var pkValue = pPK.GetValue(l);
int curValue = int.Parse(pkValue.ToString());
if (curValue > maxValue)
{
maxValue = curValue;
}
}
sdata.MaxId = maxValue;
}
sdata.MaxId = sdata.MaxId + 1;
if (pPK.PropertyType == typeof(string))
{
pPK.SetValue(o, sdata.MaxId.ToString());
}
else
{
pPK.SetValue(o, sdata.MaxId);
}
}
}
}
//todo Update Cache when user modify pk
#endregion
public IList InitiallyLoadData(Type t)
{
SData sdata = LoadEntityFromDisk(t);
return((IList)sdata.DataList);
}
private IList GetJsonList(Type t)
{
SData sdata = GetSData(t);
return((IList)sdata.DataList);
}